Computers 2e

Question #201

Topic 1

A user reports a workstation has been performing strangely after a suspicious email was opened on it earlier in the week. Which of the following should the technician perform FIRST?

• • A. Escalate the ticket to Tier 2.

• • B. Run a virus scan.

• • C. Utilize a Windows restore point.

• • D. Reimage the computer.

Answer explanation

When a user reports unusual behavior on a workstation after opening a suspicious email, the first and most immediate step should be to run a virus scan to check for malware or malicious software. Running a virus scan will help identify and potentially remove any threats that might have been introduced through the suspicious email. Escalating the ticket, using a Windows restore point, or reimaging the computer can be considered as follow-up steps depending on the results of the virus scan and the severity of the issue, but running a virus scan is the initial action to take in this scenario to address potential security threats.

Question #202

Topic 1

Which of the following wireless security features can be enabled to allow a user to use login credentials to attach to available corporate SSIDs?

• • A. TACACS+

• • B. Kerberos

• • C. Preshared key

• • D. WPA2/AES

Answer explanation

Kerberos is a network authentication protocol that can be used to provide secure authentication for users connecting to corporate SSIDs (Service Set Identifiers) via wireless networks. It allows users to use login credentials to authenticate themselves securely on the network.

Question #203

Topic 1

Which of the following would MOST likely be used to change the security settings on a user's device in a domain environment?

• • A. Security groups

• • B. Access control list

• • C. Group Policy

• • D. Login script

Answer explanation

Group policy is used to change the security settings of users

Question #204

Topic 1

Which of the following often uses an SMS or third-party application as a secondary method to access a system?

• • A. MFA

• • B. WPA2

• • C. AES

• • D. RADIUS

Answer explanation

• Often websites, or web-application services will require a second step/method to login, most use SMS to quickly send a verification, if not, verification is often done through their self-provided, or trusted third party app authenticator.

Question #205

Topic 1

A technician needs to ensure that USB devices are not suspended by the operating system. Which of the following Control Panel utilities should the technician use to configure the setting?

• • A. System

• • B. Power Options

• • C. Devices and Printers

• • D. Device Manager

Answer explanation

Open the "Control Panel." Navigate to "Power Options." Click on the selected power plan (e.g., "Balanced" or "High Performance"). Click on "Change plan settings." Click on "Change advanced power settings." In the "Advanced settings" window, look for the "USB settings" category. Under "USB settings," you should find an option related to USB selective suspend. Set it to "Disabled." Click "Apply" and then "OK" to save the changes

Question #206

Topic 1

A technician needs to manually set an IP address on a computer that is running macOS. Which of the following commands should the technician use?

• • A. ipconfig

• • B. ifconfig

• • C. arpa

• • D. ping

Answer explanation

If you enter the command “ifconfig” in the terminal, all information will be displayed. You can also use the commands “ip addr” or “ip a”. Confirm with [Enter]. You'll now be shown all IP addresses that are in your network

Question #207

Topic 1

A user receives a call from someone who claims to be from the user's bank and requests information to ensure the user's account is safe. Which of the following social-engineering attacks is the user experiencing?

• • A. Phishing

• • B. Smishing

• • C. Whaling

• • D. Vishing

Answer explanation

Vishing, also known as Voice Phishing, is a social engineering attack where an attacker uses a phone call to impersonate a legitimate entity, such as a bank representative, government agency, or customer service representative. The attacker typically tries to manipulate the victim into revealing sensitive information, such as account numbers, passwords, or other personal information, by creating a sense of urgency or fear.

Question #208

Topic 1

A user called the help desk to report an issue with the internet connection speed on a laptop. The technician thinks that background services may be using extra bandwidth. Which of the following tools should the technician use to investigate connections on the laptop?

• • A. nslookup

• • B. net use

• • C. netstat

• • D. net user

Answer explanation

The network statistics ( netstat ) command is a networking tool used for troubleshooting and configuration, that can also serve as a monitoring tool for connections over the network. Both incoming and outgoing connections, routing tables, port listening, and usage statistics are common uses for this command

Question #209

Topic 1

Which of the following operating systems is considered closed source?

• • A. Ubuntu

• • B. Android

• • C. CentOS

• • D. OSX

Answer explanation

"In 2016, with the release of macOS 10.12 Sierra, the name was changed from OS X to macOS to align it with the branding of Apple's other primary operating systems: iOS, watchOS, and tvOS." With closed source software (also known as proprietary software), the public is not given access to the source code, so they can't see or modify it in any way.

Question #210

Topic 1

An internet café has several computers available for public use. Recently, users have reported the computers are much slower than they were the previous week. A technician finds the CPU is at 100% utilization, and antivirus scans report no current infection. Which of the following is MOST likely causing the issue?

• • A. Spyware is redirecting browser searches.

• • B. A cryptominer is verifying transactions.

• • C. Files were damaged from a cleaned virus infection.

• • D. A keylogger is capturing user passwords.

Answer explanation

Cryptomining is a process that uses the computer’s resources, including the CPU, to verify cryptocurrency transactions and add them to the blockchain. This process can be resource-intensive and can cause the CPU to run at 100% utilization, resulting in slower performance.